I have spent a lot of my time being called to "fix" other peoples work.

And though I agree we all deal with different clients and various levels of systems, one thing I constantly see is money left on the table.

People get clients and can only offer what they are comfortable with. The client doesn't know, they just want something that does what you say it will do.

I meet people that think they own a top of the line system (the Bentley) and what they really have is a middle of the road system (the Camery, or maybe a 3 series BMW) Still a decent system, but if I am there, it's not working 100% and the first CI is out of the picture.

Personally going forward, I think people are slowly moving away from distributed Video through Matrix type of switchers. With so much of what we watch being streamed from ATV or Roku, we really only need to find a way to get Cable or Sat fed around the house. And even those boxes have to be looking at becoming something entirely different in the very near future.
Cable is outdated. Not all Cord cutters are all about saving money, some just want to get away from the crappy service and over priced packages they have been forced to pay for.
With streaming services you can subscribe to various things and get pretty close to the same number of premium channels that most people enjoy, and the added benifit of being able to watch what you want, when you want.